Refrigerator shelf



FIG. 1 is perspective view of a refrigerator shelf showing my ornamental design;

FIG. 2 is perspective view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 3 is a top plan view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 4 is a bottom plan view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 5 is a front plan view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 6 is a rear plan view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 7 is a left side view of the refrigerator shelf embodiment shown in FIG. 1; and,

FIG. 8 is a right side view of the refrigerator shelf embodiment shown in FIG. 1. 

The ornamental design for a refrigerator shelf, as shown and described. 